What city is 45373 in?

45373 is a Troy, OH mailing address. By land area, 14% lies inside Troy; the rest is outside any Census-defined city or community.

What is the population of 45373?

About 37,565 people (±759), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,863.

What is the median household income in 45373?

$75,742 (±$6,411), compared with $71,389 for Ohio as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 45373?

26 USPS carrier routes with 16,703 residential and 1,109 business mailboxes (17,813 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 45373?

The closest, measured center to center: 45312 (5.6 mi, Casstown), 45371 (6.6 mi, Tipp City), 45339 (7.9 mi, West Milton), 45359 (8.3 mi, Pleasant Hill), 45377 (9 mi, Vandalia) and 45383 (9 mi, West Milton).

45373 ZIP Code, Troy, OH

45373 is a ZIP code in Troy, Ohio in Miami County. It covers 88 square miles of land. The closest ZIP codes are 45312, 45371 and 45339. 37,565 people live here in 15,229 households, more than in 9 of every 10 Ohio ZIP codes. With about 428 people per square mile it is lightly settled, and most homes are owner-occupied (71%). Median household income is $75,742, close to the Ohio median of $71,389.

Quick facts

Mailing city: Troy, OH
County: Miami County
Land area: 88 sq mi
Population: 37,565
Median household income: $75,742
Carrier routes: 26 (16,703 homes)

Key figures

Measure	Value
Residents	37,565
Households	15,229
Median household income	$75,742
Income per person	$40,954
Median age	39.3
Homeowners	71.3%
Median home value	$253,400
Median rent	$988
Bachelor's degree or higher	35.1%
Average commute (minutes)	21.2
Households with kids under 18	31.7%
Moved in the past year	8.9%
Below the poverty line	10.1%
Broadband internet	92.1%
Speak a non-English language at home	4.7%

Household income

% of households	Value
<$10K	2.8%
$10–15K	4.2%
$15–25K	7.5%
$25–35K	6.0%
$35–50K	11.6%
$50–75K	17.6%
$75–100K	12.4%
$100–150K	18.7%
$150–200K	8.9%
$200K+	10.3%

Age

% of all residents	Value
<10	12.4%
10–19	13.6%
20–24	4.8%
25–34	12.1%
35–44	14.0%
45–54	11.9%
55–64	12.9%
65–74	11.1%
75+	7.2%

Tenure

% of housing units	Value
Owned, with mortgage	47.1%
Owned outright	21.0%
Rented	27.0%
Vacant	5.0%

Type of building

% of housing units	Value
Detached house	77.5%
Townhome	4.3%
2–4 units	8.5%
5–19 units	6.6%
20+ units	2.9%
Mobile / other	0.3%

Businesses in 45373

862 business establishments with 19,222 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 121
Health Care and Social Assistance: 114
Other Services (except Public Administration): 96
Accommodation and Food Services: 92
Professional, Scientific, and Technical Services: 74
Construction: 73
Manufacturing: 67
Finance and Insurance: 65

EDDM carrier routes

45373 has 26 USPS carrier routes with 16,703 residential and 1,109 business mailboxes. Open the EDDM route map.

Carrier routes in 45373

45373 has 26 USPS carrier routes (18 city (C), 8 rural (R)) with 16,703 residential and 1,109 business mailboxes. Routes range from 303 homes (C003) to 857 homes (R001); the median route has 661 homes. The Census counted 15,229 households in 45373 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	20
750–999	4
1,000–1,499	0
1,500+	0

Best routes in 45373 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C003 — USPS business mailboxes 203, 303 homes
Route C005 — USPS business mailboxes 151, 682 homes
Route C002 — USPS business mailboxes 110, 583 homes
Route R008 — USPS business mailboxes 96, 836 homes
Route C017 — USPS business mailboxes 87, 700 homes

Select these 5 routes on the route map

Every carrier route in 45373

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C002	City	583	110	$75,598	—	—	—
C003	City	303	203	$127,383	—	—	—
C004	City	619	14	$82,639	—	—	—
C005	City	682	151	$130,510	—	—	—
C006	City	568	50	$52,623	—	—	—
C007	City	523	22	$56,216	—	—	—
C008	City	777	33	$33,040	—	—	—
C009	City	645	9	$52,623	—	—	—
C010	City	520	10	$110,454	—	—	—
C011	City	354	63	$111,984	—	—	—
C013	City	701	7	$111,984	—	—	—
C014	City	659	1	$87,916	—	—	—
C015	City	748	0	$80,134	—	—	—
C016	City	672	19	$72,699	—	—	—
C017	City	700	87	$102,415	—	—	—
C018	City	550	0	$80,134	—	—	—
C019	City	601	82	$55,128	—	—	—
C020	City	775	42	$55,128	—	—	—
R001	Rural	857	10	$111,984	—	—	—
R002	Rural	604	17	$109,788	—	—	—
R003	Rural	698	27	$127,383	—	—	—
R005	Rural	659	19	$80,382	—	—	—
R006	Rural	722	9	$78,935	—	—	—
R007	Rural	685	13	$114,543	—	—	—
R008	Rural	836	96	$78,371	—	—	—
R009	Rural	662	15	$114,543	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 45373 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

45312 — Casstown village, OH (5.6 mi)
45371 — Tipp City city, OH (6.6 mi)
45339 — West Milton village, OH (7.9 mi)
45359 — Pleasant Hill village, OH (8.3 mi)
45377 — Vandalia city, OH (9 mi)
45383 — West Milton village, OH (9 mi)
45326 — Fletcher village, OH (9.1 mi)
45356 — Piqua city, OH (9.1 mi)

Areas that include 45373

Where it ranks

Mail every home in 45373

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 45373, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 45373 in?: 45373 is a Troy, OH mailing address. By land area, 14% lies inside Troy; the rest is outside any Census-defined city or community.
What county is 45373 in?: 45373 is in Miami County.
What is the population of 45373?: About 37,565 people (±759), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,863.
What is the median household income in 45373?: $75,742 (±$6,411), compared with $71,389 for Ohio as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 45373?: 26 USPS carrier routes with 16,703 residential and 1,109 business mailboxes (17,813 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 45373?: The closest, measured center to center: 45312 (5.6 mi, Casstown), 45371 (6.6 mi, Tipp City), 45339 (7.9 mi, West Milton), 45359 (8.3 mi, Pleasant Hill), 45377 (9 mi, Vandalia) and 45383 (9 mi, West Milton).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.